Promachus yesonicus
In 3 days ~50% in a week ~80%
Promachus yesonicus, or shioya-abu (塩屋虻, シオヤアブ) in Japanese, is a species of robber flies. In Japanese, "shioya" means a salt merchant (someone who makes or deals in salt), and "abu" means a horse-fly. This insect is called "shioya-abu" because the males have a white tip to their tail that resembles salt. Wikipedia →
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More parks will be added in future updates.
No species of the same family or order lives in Hiroshima, so these are its closest relatives here: other insects.
Possible
About 20% of wildlife watchers report a Promachus yesonicus sighting in Hiroshima on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 11th most-seen of the 14 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June and July
In those months about 50% of wildlife watchers report a Promachus yesonicus in Hiroshima on a given day, against under 5% in February–May and August–December, the lowest months. Those are among Hiroshima's wettest months, with about 240 mm of rain a month against 65 mm in January.
Among the best
Of the 7 cities where we can rate Promachus yesonicus sightings, Hiroshima ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Daejeon (South Korea, about 20%).
GBIF citizen-science records
It is estimated from how often the Promachus yesonicus is recorded against all the insects logged in Hiroshima (5 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
